Ventilator



June 16, 1925. 1,542,740" E. T. SPILLMAN VENTILAT OR Filed llay 31, 1924INVENTOR.

- EDWARD T. SPILLMAN latented June 16, 1925.

UNITED STATES PATENT OFFICE.

EDWARD T. SPILLMAN, OF COLUMBUS, OHIO, ASSIGNOB TO THE V-VJ VENTILATORCOMPANY, OF COLUMBUS, OHIO.

VENTILATOR,

"Application filed May 31,

To all whom it may concern:

Be it lmown that I, EDWARD T. SPILL- MAN, a citizen of the United Statesof America, residing at Columbus, in tl e county of Franklin and Stateof()hio, have invented certain new and useful Improvements in Ventilators,of which the follow-- ing is a specification. My present inventionrelates generally to ventilators and more particularly to ventilators ofthe type described and claimed in my Patent Number 1,49'L996, dated June17, 1924:, my primary object being to extend and adapt such a ventilatorto use-in connection with industrial buildings of various characters,for instance paper mills, power houses, factories, foundries, car shops,glass factories, laundries, round houses, freight houses and the like,and especially those buildings wherein the dripping of condensed waterfrom steam and vapor passing through the ventilators is detrimental tothe work carried on within the building.

My present improvements are generally embodied in a ventilator of thetype above mentioned, by providing the same with a supporting base and ahood, both arranged and constructed to avoid the condensation of steamand water vapor on the inner sur face thereof, together with meanswhereby to protect the hood and to cooperate in the support of certainof the other parts.

' In the accompanying drawing which illustrates my present invention andforms a part of this specification,

Figure 1 is a side view showing my in1- proved ventilator forapplication to a ridge roof,

Figure 2 is a similar view showing the same for application to a flatsloping roof, and

Figure 3 is a'vertical sectional viewtaken centrally through my improvedventilator on an enlarged scale.

Referring now to these figures, the cylindrical body 10 of my improvedventilator has a circumferential series of openings 11 therearound andextending downwardly therein from its upper edge, so as to'provide forthe lateral passage of air from the interior of the body 10 into aseries of external shields 12 grouped around the body opposite theopenings 11. Theseshields are of U-shape as in my previous applicationand have side walls 13 tapering'from rela- 1924. Serial No. 718,973.

tively wire lower ends where they are secured to the external surface ofthe ventllator body 10, to relatively narrow upper portions where theseside walls are spaced from the body 10, the shields being secured attheir upper ends to supporting ring 1% around and spaced from the upperend of the body 10.

Supported above the body 10 and spaced therefrom'by virtue of verticalsupporting arms 15, is a conical. hood 16 of such a diam ter that itslower outer edge extends beyond the upper edge of the body, this hoodbeing surrounded in spaced relation by an upright circular storm band 17securely held by virtue of its connection with the upstanding outerportions of angular supporting arms 18, the inner'portions of these armsbeing secured to the body 10 and the intermediate portions thereof beingconnected to and supporting the ring 14 to which the upper ends of theshields 12 are connected.

, At its lower end the body 10 telescopes the upper reduced portion 19of a tubular tapering supporting base 20 whose lower larger end is cutaway to fit a particular roof contour as for instance a ridge roof suchas shown in Figures 1 and 3 or a flat sloping roof as shown in Figure 2,the lower larger end of the supporting base 20 being in either instanceprovided with a sur rounding flange 21 aifording means whereby theventilator as a whole may be securely attached to the roof of a buildingin connection with which it is to be used, around the ventilatingopening ofthe roof.

Thus the air within the building including steam and water vapor if suchare present, rise within the tubular base 20 and in this way to the body10 of the ventilator and it is obviously of great consideration to avoidthe collection of condensed water upon the inner surface of the base 20and the lower surface of the hood 16 which might otherwise drip withinthe building to the detriment of the work being carried on therein.

It is for the reason just stated that the tubular base 20 is formed withdouble walls spaced apart as at 22 for insulating purloo poses, thisspace being either a dead air space or filled with any suitableinsulating wool or other material as may be desired to bring about theresult which is sought for.

The hood 16 is likewise constructed with double walls spaced apart forinsulating purposes as at 23, the space so formed being either a deadair space or filled with insulating material which by virtue of theprovision of apertures or passages opening laterally into externalshields, the body 10 is sufliciently insulated for the purposes abovestated and my improvements thus bring about the desired results in aconstruction which is obviously of great strength, efii ciency anddurability and one which operates automatically and continuously withoutmechanically working parts to get out of order, bind, rattle or squeal:for lack of lubrication. My improved ventilator is simple, strong andsilent and will secure the desired results without cost beyond the firstcost.

I claim:

1. A ventilator of the type described, including a vertical cylindricalbody having apertures in the wall thereof, shields secured externally ofthe body opposite the apertures and in upwardly and inwardly inclinedrelation to, and spaced from, the

eluding a vertical cylindrical body having apertures in the wallthereof, shields secured externally of the body and into which the bodyopens through said apertures, said shields being of U-shape and havingside walls secured at their lower portions to the body and having theirupper ends spaced from the body, a ring to which the upper ends of theshields are connected, a conical hood above the body, a storm bandaround, and spaced from, the hood, supports upstanding from the body forthe support of said band and to which the said ring is connected, and asupporting base on which the body is seated.

3. A ventilator of the type described, including a vertical cylindricalbody having apertures in the wall thereof, shields secured externally ofthe body and into which the body opens through said apertures, a hoodspaced above the body, a tubular supporting base on which said body isdisposed, said base and said hood having double walls and insulatingspaces between said walls whereby to prevent condensation on the innersurfaces thereof, a storm band around and spaced from the hood, a ringaround, and connected to, the said shields, and angular supportingmembers upstanding from the body to which said ring and said band areconnected.

In testimony whereof I have aflixed my signature.

EDVVAR-D T. SPILLMAN.

